public class Test {
    public static void main(String[] args) {
        HashBuck hashBuck = new HashBuck();
        hashBuck.put(12,1212);
        hashBuck.put(20,2020);
        hashBuck.put(67,6767);
        hashBuck.put(3,33);
        hashBuck.put(33,3333);
        hashBuck.put(90,9090);
        hashBuck.put(54,5454);
        hashBuck.put(21,2121);
        hashBuck.put(79,7979);
        hashBuck.put(0,0);
        System.out.println(hashBuck.get(0));
        System.out.println(hashBuck.get(90));
    }
}
